/Engine/Source/Runtime/Core/Public/Async/TaskGraphInterfaces.h
Life stage verification Tasks go through 8 steps, in order. In non-final builds, we track them with a thread safe counter and verify that the progression is correct.
enum ELifeStage { LS_BaseContructed = 0, LS_Contructed, LS_ThreadSet, LS_PrequisitesSetup, LS_Queued, LS_Executing, LS_Deconstucted, }